On Thu, Nov 18, 2010 at 05:29:41PM +0100, RLW wrote: > W dniu 2010-11-18 16:52, David Coppa pisze: > >2010/11/18 RLW<seran...@o2.pl>: > > > >>there is no tcpbench in packages for 4.8 and for debian linux > > > >Because it's in base: /usr/bin/tcpbench > > > >ciao, > >david > > > > > I removed Intel NIC and run test on broadcom integrated Gbit NIC to > see if there is problem with em driver > > bge0 at pci1 dev 11 function 0 "Broadcom BCM5705K" rev 0x03, BCM5705 > A3 (0x3003): apic 1 int 16 (irq 5), address XX:XX:XX:XX:XX:XX > brgphy0 at bge0 phy 1: BCM5705 10/100/1000baseT PHY, rev. 2 > > > 1. > pf enabled, queue 950mbit, qlimit 500 > iperf test: 410 Mbits/sec > > r...@router-test (/root)# top > > load averages: 0.95, 0.53, 0.26 > 23 processes: 1 running, 21 idle, 1 on processor > CPU states: 1.2% user, 0.0% nice, 84.4% system, 14.4% interrupt, > 0.0% idle > Memory: Real: 8972K/42M act/tot Free: 443M Swap: 0K/759M used/tot > > > 2. test made between two OpenBSD 4.8 boxes (there is no tcpbench for debian) > > > transfers by tcpbench: > > Conn: 1 Mbps: 399.972 Peak Mbps: 406.093 Avg Mbps: 399.972 > 133996 45932008 370.419 100.00% > Conn: 1 Mbps: 370.419 Peak Mbps: 406.093 Avg Mbps: 370.419 > 134999 46833528 373.920 100.00% > Conn: 1 Mbps: 373.920 Peak Mbps: 406.093 Avg Mbps: 373.920 > 136074 43531224 323.953 100.00% > Conn: 1 Mbps: 323.953 Peak Mbps: 406.093 Avg Mbps: 323.953 > 137002 41013960 353.950 100.00% > Conn: 1 Mbps: 353.950 Peak Mbps: 406.093 Avg Mbps: 353.950 > 137996 50500448 406.442 100.00% > Conn: 1 Mbps: 406.442 Peak Mbps: 406.442 Avg Mbps: 406.442 > > > r...@router-test (/root)# top (while running tcpbench) > > load averages: 1.26, 0.80, 0.49 > 22 processes: 1 running, 20 idle, 1 on processor > CPU states: 0.0% user, 0.0% nice, 77.2% system, 15.6% interrupt, > 7.2% idle > Memory: Real: 8752K/43M act/tot Free: 442M Swap: 0K/759M used/tot > > > r...@router-test (/root)# systat queue (while running tcpbench) > > 2 users Load 0.82 0.69 0.51 Thu Nov 18 17:13:10 2010 > > QUEUE BW SCH PR PKTS BYTES DROP_P DROP_B QLEN BORR > SUSP P/S B/S > root_bge0 1000M cbq 0 7300K 10G 0 0 0 0 > 0 314 47M > q_lan 950M cbq 7300K 10G 0 0 0 0 > 0 314 47M > > ---- > > Now back on Intel NIC > > 1. > pf enabled, queue 950mbit, qlimit 500 > iperf test: 347 Mbits/sec > > > 2. > transfers by tcpbench: > > Conn: 1 Mbps: 328.701 Peak Mbps: 336.374 Avg Mbps: 328.701 > 29002 41936224 335.490 100.00% > Conn: 1 Mbps: 335.490 Peak Mbps: 336.374 Avg Mbps: 335.490 > 30001 41394096 331.484 100.00% > Conn: 1 Mbps: 331.484 Peak Mbps: 336.374 Avg Mbps: 331.484 > 30999 39930144 320.402 100.00% > Conn: 1 Mbps: 320.402 Peak Mbps: 336.374 Avg Mbps: 320.402 > 32003 42171560 336.363 100.00% > Conn: 1 Mbps: 336.363 Peak Mbps: 336.374 Avg Mbps: 336.363 > 33001 41970888 336.440 100.00% > Conn: 1 Mbps: 336.440 Peak Mbps: 336.440 Avg Mbps: 336.440 > 34002 38258208 305.760 100.00% > Conn: 1 Mbps: 305.760 Peak Mbps: 336.440 Avg Mbps: 305.760 > > > r...@router-test (/root)# top (whiel runing tcpbench) > > load averages: 1.20, 0.59, 0.25 > 24 processes: 1 running, 22 idle, 1 on processor > CPU states: 0.2% user, 0.0% nice, 75.6% system, 21.2% interrupt, > 3.0% idle > Memory: Real: 8904K/43M act/tot Free: 442M Swap: 0K/759M used/tot > > > r...@router-test (/root)# systat queue (while running tcpbench) > 2 users Load 0.57 0.54 0.28 Thu Nov 18 17:25:26 2010 > > QUEUE BW SCH PR PKTS BYTES DROP_P DROP_B QLEN BORR > SUSP P/S B/S > root_em0 1000M cbq 0 2963K 4381M 0 0 0 0 > 0 279 42M > q_lan 950M cbq 2963K 4381M 0 0 0 0 > 0 279 42M > > ---- > > so... the same machine, different NIC, different testing programs, > same behavior (~50% of defined queue speed, very high CPU usage) > > the only thing i can try now is moving intel nic and hdd to other > computer with pcie slot and run test on it to see is it hardware > (motherboard) problem. >
No the problem is altq. Altq(4) was written when 100Mbps was common and people shaped traffic in the low megabit range. It seems to hit a wall when doing hundreds of megabits. Guess someone needs to run a profiling kernel and see where all that time is spent and then optimize altq(4). -- :wq Claudio
